We look at the division of 78253559 by 803 
Let's see how many times 803 fits into 78253559.

Let's proceed to step 1:
The number 803 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 803

Moving on to step 2:
803 goes into 78 0 times with a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Grab the next digit (2) from the dividend, add it to 78, then carry on: 782 / 803

Advancing to step 3:
803 can be fit into 782 0 times, resulting in a remainder of 782.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 782, we end up with 782.
Grab the next digit (5) from the dividend, add it to 782, then carry on: 7825 / 803

Going ahead to step 4:
The number 803 fits into 7825 9 times, leaving a remainder of 598.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 7227 away from 7825, we end up with 598.
Fetch the next digit (3) from the dividend, attach it to 598 and continue: 5983 / 803

Advancing to step 5:
5983 divided by 803 is 7 with a remainder of 362.
Write down 7 as next digit of the result. 
Result so far: 97.0
Subtracting 5621 from 5983 leaves us with 362.
Grab the next digit (5) from the dividend, add it to 362, then carry on: 3625 / 803

Going ahead to step 6:
803 goes into 3625 4 times with a remainder of 413.
Record the quotient 4 as the next digit in the result. 
Result so far: 974.0
Subtracting 3212 from 3625 leaves us with 413.
Take the next digit (5) from the dividend and append it to 413, then repeat: 4135 / 803

Step 7:
803 can be fit into 4135 5 times, resulting in a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 9745.0
If we take 4015 away from 4135, we end up with 120.
Grab the next digit (9) from the dividend, add it to 120, then carry on: 1209 / 803

Moving on to step 8:
If we divide 1209 by 803, we get 1 and a remainder of 406.
Record the quotient 1 as the next digit in the result. 
Result so far: 97451.0
Subtract 803 from 1209 to get 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Advancing to step 9:
When dividing 4060 by 803, we get 5 with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 97451.5
If we take 4015 away from 4060, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 10:
803 goes into 450 0 times with a remainder of 450.
Record the quotient 0 as the next digit in the result. 
Result so far: 97451.5
Subtracting 0 from 450 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Moving on to step 11:
When dividing 4500 by 803, we get 5 with a remainder of 485.
Record the quotient 5 as the next digit in the result. 
Result so far: 97451.505
If we take 4015 away from 4500, we end up with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

On to step 12:
803 can be fit into 4850 6 times, resulting in a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 97451.5056
The remainder is 32 after subtracting 4818 from 4850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 13:
When dividing 320 by 803, we get 0 with a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 97451.5056
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 14:
The number 803 fits into 3200 3 times, leaving a remainder of 791.
The number 3 becomes the next digit in our result. 
Result so far: 97451.505603
If we subtract 2409 from 3200, we get 791.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7910, and continue the process.

Step 15:
The number 803 fits into 7910 9 times, leaving a remainder of 683.
Record the quotient 9 as the next digit in the result. 
Result so far: 97451.5056039
The remainder is 683 after subtracting 7227 from 7910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6830, and continue the process.

Advancing to step 16:
803 can be fit into 6830 8 times, resulting in a remainder of 406.
Use 8 as the next digit of our solution. 
Result so far: 97451.50560398
Deduct 6424 from 6830 and we're left with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

After the division, we end up with 97451.50560398 and a remainder of 4.06e-07.